Play as a little bird out for revenge in Ayopa's arcade game, Swift Revenge. We also have a ring-flinging party game, and a reference app that allows you to discover and learn about satellites.

All app prices are subject to change at any time and without notice regardless of stated free duration. Price changes are solely under the control of the developers.

iPhone:

miniSynth 2 ($0.99 → Free, 7.4 MB): Make your own kind of music with this mini synthesizer.

You're able to mash away on the scrollable keyboard to create and record tunes whenever the moment strikes. The app features a 32-bit professional quality digital signal processor, allowing you to hear your tunes just as they were intended. The app also includes dual analog modeling oscillators, Audiobus input, MIDI-in, SoundCloud support, and 30 factory presets.
miniSynth 2 is available for free today only (09/28). It has a 4.5-star rating with a total of 18 ratings.

The augmented reality view allows you to just point your iPhone's camera at the sky to see what's passing overhead. You can tap on satellites to get detailed information like their names, deployment date, purpose, and elevation. You're also able to view all satellites in an interactive 3-D view, search for satellites by name and filter them, and capture and share images. The app includes 20,000 satellites to discover.
SkyView™ Satellite Guide: Find space junk, space stations, and more day or night is available for free for a limited time. It has a 5-star rating with a total of 12 ratings.

Instamory utilizes Instagram's database of more than 150 million photos to provide you with endless images to memorize and match. The game can be played with up to three other people, and you can choose what types of photos are displayed by searching for specific tags. Of course, you can also login to your Instagram account and play with your own photos. The app also includes the ability to "like" your favorite Instagram photos.
Instamory Pocket - memorize and collect matching Instagram photos is available for free for a limited time. It has a 4.5-star rating with a total of 22 ratings.

It allows you to capture photos or videos with a tilt-shift effect. You're able to choose from linear or circular effects, and customize their focal points with pinch and pull gestures. You're also able to adjust other parameters like saturation, contrast, and brightness to get the exact effect you're looking for. Once everything looks in order, share your unique creations via Twitter, Facebook, or email.
TiltShift Effect is available for free for a limited time. It has a 4-star rating with a total of 26 ratings.

Just launch the app and it's ready to go. There's no need for setup or calibration. The app will automatically switch between its two modes to give you the best possible readings. You can also listen for the audible alerts in case you can't see the display. The app includes a lock mode as well so you can write down measurements.
Mission: Level is available for free for a limited time. It has a 4.5-star rating with a total of 8 ratings.

Mission: Park! ($1.99 → Free, 10.7 MB): Avoid parking tickets and safely make your way back to your vehicle with this utility app.

Just slide the meter on the main screen to quickly set your timer. If you know you're going to have difficulties remembering where you parked, tag your position and the app will help you find your way back. The app also includes the ability to tag multiple locations, and attach notes, photos, or audio in case your GPS signal is weak.
Mission: Park! is available for free today only (09/28). It has a 4-star rating with a total of 12 ratings.

Take control of a little bird named Swift who is out for revenge. Tilt to control his horizontal movements and tap on the screen to dash through objects. You're able to score combo points by smashing objects consecutively. Collect coins along your journey to unlock all kinds of new weapons and costumes. The game also includes a handful of themed worlds, epic boss battles, challenges to complete, and achievements and leaderboards via Game Center.
Swift Revenge is available for free for a limited time. It has a 4.5-star rating with a total of 10 ratings.

Radar for Facebook ($0.99 → Free, 7.7 MB): Broadcast your location and find out which of your Facebook friends are nearby with this social networking app.

After signing into your Facebook account, you're able to broadcast your current location and discover which of your friends and family members are nearby via a radar or map view. The public radar displays Facebook users with mutual interests, allowing you to start chats and create new relationships. The app also includes push notifications to alert you when a friend is nearby, history, and a variety of privacy settings you can customize.
Radar for Facebook is available for free for a limited time. It has a 4-star rating with a total of 82 ratings.

Universal:

The app’s interface makes it remarkably easy for your child to discover and learn. It consists of a large wall of thumbnail icons, one for each included creature, which are sorted alphabetically. When your child taps on one, they’ll hear the creature's name pronounced, see a high resolution image of it, and have the option to watch a video and view a fun fact. The app includes more than 50 creatures to discover and over 100 videos.
ABC Aquarium is available for free for a limited time. It has a 4.5-star rating with a total of 16 ratings.

Ring Fling ($1.99 → Free, 2.3 MB): Find out who has the fiercest flinging finger with this hectic party game.

You're able to play with one to four AI or human players. The object of the game is to fling your rings in order to push the star into someone else's goal while keeping it out of your own. You're also able to charge your ring to increase its size by holding your finger on the screen. The first player to reach the target number of goals wins. The game includes six gameplay modifiers, iCloud integration, and achievements via Game Center.
Ring Fling is available for free for a limited time. It has a 4.5-star rating with a total of 34 ratings.

BINGO Blitz - FREE Bingo + Slots ($4.99 → Free, 38.9 MB): This Weekend Only: Receive a 50 credit pack for free. That's a $2.99 value! Just make sure to play a round of Bingo Blitz before the weekend's over!

Get your daubing finger at the ready, because this arcade-style bingo game will challenge your reflexes and your patience. Bingo Blitz takes classic bingo gameplay and adds an exciting mix of power-ups, collectible items, and achievements. You're able challenge players from all over the world in intense bingo battles. Random numbers will appear at the top, and you must tap on the correct number on your card to daub it. Make three correct daubs and you'll receive a power-up. When you have a vertical, horizontal, or four corners bingo, tap the bingo button to call it out. If you call out bingo before you have one, you're disqualified. You're able to play with up to four cards at a time, join different themed rooms, and even play a round of slots.
BINGO Blitz - FREE Bingo + Slots is available for free for a limited time. It has a 4-star rating with a total of 12677 ratings.

That concludes today's issue of Apps Gone Free. If you like staying on top of these daily deals, don't forget to check out our free AppsGoneFree app. It provides all the deals each day, and even an archive of past deals that are still active.

Developers:

If you are a developer who would like to get your app included in our “Apps Gone Free” daily lists, here’s our basic set of rules:

It must have at least a three-star average rating at the time it goes free.

The app must not have been free numerous times (3+) over the last six months.

The free version of your app must not include ads.

To submit an app, simply send a request to [email protected] with the subject “Apps Gone Free.” Please include the name of the app, a link to it in the App Store, when and for how long you intend to offer the app for free, and anything else you would like to share. We will take it from there.